-
Notifications
You must be signed in to change notification settings - Fork 0
/
RZBatteryStatusManager.m
140 lines (115 loc) · 4.79 KB
/
RZBatteryStatusManager.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
//
// RZBatteryStatusManager.m
// RZBatteryStatus
//
// Created by Ray Zhang on 13-4-27.
// Copyright (c) 2013年 Ray Zhang. All rights reserved.
//
#import "RZBatteryStatusManager.h"
#import "UIStatusBarBatteryItemView.h"
#import "UIStatusBar.h"
#define BATTERY_LEVEL_KEYPATH @"batteryLevel"
#define SpringBoardFullyChargedNotification CFSTR("com.apple.springboard.fullycharged")
@interface RZBatteryStatusManager ()
@property (nonatomic, retain) NSNumber *batteryLevel;
- (void)updateBatteryLevel;
@end
static void callBack(CFNotificationCenterRef center, void *observer, CFStringRef name, const void *object, CFDictionaryRef userInfo) {
if (CFStringCompare(name, SpringBoardFullyChargedNotification, kCFCompareAnchored) == kCFCompareEqualTo) {
[(RZBatteryStatusManager *)observer updateBatteryLevel];
}
}
static RZBatteryStatusManager *manager = nil;
@implementation RZBatteryStatusManager
+ (id)sharedManager {
@synchronized(self) {
if (manager == nil) {
manager = [[self alloc] init];
}
}
return manager;
}
+ (id)activeManager {
return manager;
}
+ (id)allocWithZone:(NSZone *)zone {
@synchronized(self) {
if (manager == nil) {
manager = [super allocWithZone:zone];
return manager;
}
}
return nil;
}
- (id)init {
self = [super init];
if (self) {
[self updateBatteryLevel]; // initialize battery leve
// add observer to battery level;
CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(), self, callBack, SpringBoardFullyChargedNotification, NULL, CFNotificationSuspensionBehaviorDrop);
[self addObserver:self forKeyPath:BATTERY_LEVEL_KEYPATH options:NSKeyValueObservingOptionNew context:NULL];
_batteryState = [[UIDevice currentDevice] batteryState]; // initialize battery state
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(updateBatteryState) name:UIDeviceBatteryStateDidChangeNotification object:nil];
}
return self;
}
- (void)dealloc {
[_batteryLevel release];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIDeviceBatteryStateDidChangeNotification object:nil];
CFNotificationCenterRemoveObserver(CFNotificationCenterGetDarwinNotifyCenter(), self, SpringBoardFullyChargedNotification, NULL);
[super dealloc];
}
- (id)retain {
return self;
}
- (oneway void)release {
return;
}
- (id)autorelease {
return self;
}
- (NSUInteger)retainCount {
return NSUIntegerMax;
}
#pragma mark - Key Value Observing Method
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
if ([keyPath isEqualToString:BATTERY_LEVEL_KEYPATH]) {
NSInteger newValue = [[change objectForKey:@"new"] integerValue];
if (_batteryCapacityLevel != newValue) {
_batteryCapacityLevel = newValue;
if ([_delegate respondsToSelector:@selector(batteryCapacityLevelChanged:)]) {
[_delegate batteryCapacityLevelChanged:newValue];
}
}
}
}
#pragma mark - Custom Methods
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- (void)updateBatteryLevel {
UIStatusBar *statusBar = [[UIApplication sharedApplication] valueForKey:@"_statusBar"];
if (statusBar) {
UIStatusBarForegroundView *foregroundView = [statusBar valueForKey:@"_foregroundView"];
NSArray *foregroundSubviews = [foregroundView subviews];
for (UIStatusBarItemView *itemView in foregroundSubviews) {
if ([itemView isMemberOfClass:NSClassFromString(@"UIStatusBarBatteryItemView")]) {
self.batteryLevel = [itemView valueForKey:@"_capacity"];
break;
}
}
} else {
NSUInteger batteryLevel = [[UIDevice currentDevice] batteryLevel] * 100;
self.batteryLevel = [NSNumber numberWithInteger:batteryLevel];
}
}
- (void)updateBatteryState {
UIDeviceBatteryState deviceBatteryState = [[UIDevice currentDevice] batteryState];
if (_batteryState != deviceBatteryState) {
_batteryState = deviceBatteryState;
if ([_delegate respondsToSelector:@selector(batteryStateChanged:)]) {
[_delegate batteryStateChanged:deviceBatteryState];
}
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@end